Gearing for drill-presses.



S. J. MORGAN'u GEAMNG yon DRILL PRESSES. APPLICATION-)FILED DEG. 30, 190'?.

901,635;y Patented 0011.20, 190s.

S. J. MORGAN GEARING FOR DRILL PRESSES.

APPLIOATION FILED DBG. 3o, 1907.

90 1 63 5 Patented Oct. 20, L908 2 SHEETS-SHEET 2.

" enuanfoz lo g 15 permit y. in h@ @Gumy I' n srenghemng Trib S23 as mccfef im Fig. 50 have invented a. new and us 'y and h@ im s.' fases of th@ arms l5 and 19 Gearing fols D'ljrsses, @f Whif-h fsa fol ,mi the. bm 22 arangec 011 Curved lines mqing s. specicatozs. I Y a prswficzay complet@ cinzia.

's .mi im rfaes m gaming fm' rll f upper pari-.ifm of the standarc 10 is Became?. fa black 24, has s'pwvded with a. A65 L Md@ E mpxmfawi www f0.1- bf Wwpton of a. rib 25 lhan, pro- -erjz' spindle and @ELM ecti; from the iowa? fac@ of am adjustable mem ip zicm'i fr?, Mocl, the rib and groov@ being prefembly 1 dovwmlfd in @was Svcon in order im pre vant separati@ of ih@ two Meeks. While the 70 .meeting faces Gif the blocks are arzzm'lged on amsm which my feudi? a L.. l piane Qi! the standmd l0. Y

free, sa hm; the du Hwy stanm'd, md :Raid sare'w saffier; hand. be www?. mm pm; v:Hmm fm* usin Ehe wim-5l Wuch may be turnadfol' the pur 80 5 Wrench 'En m" freiem@ th@ iyl nos@ ai' moving the block in, the direction rence Qmminding paris im' n pmyad fi@ worm it?, of h@ curved bzw: 52.5. and is leldvhere against one che veyiica members of this arm E@ up being arranged w enter a. series 0f locking extemdec un @mW/@ 1 line, and provided no'hi-xs 40 that serv@ to `mcl h@ lever in any with 'WG amm i@ :.w 1* fsrmzzg vafngs 'position to which ii may b9 adjusted, While for a @-a 2G on 'which is s'czmad a fly. ving M1@ inner' arm 4.0 serves by engagement with 110` to 'wfhf ary '-razzsmtth@ rib E53 to limit the outward movement of Wd Ham za" fzmlj-f .maxaman the, laver, as it 1s moved fao disengage from tliie notches and thusA prevent. such excess is in the mid position, the two disks 32 und 33 being in Contact with the heini-sphere 3l at precisely the same distance from the ceu ter of the rivin surface of seicl spheren so that the speed o the spindle equal to the speed of the shaft 20., if the lever is moved vdovvn to the lowermost of the .notches 40, the l1onli-sphere will be so adjusted that the driving disk 32 Will he in enjfegement with the largest diameter of the criving snrisce of the sphere, While the driven disk will he in engagement with. its smallest surface snfi the drill spindle will, therefore, he rotated :it e s eed much lower than that of the driving s aft 20. Ii the lever is moved in the opposite'direction, or toward the highest ci the notches 40, 'the riving isi; will engege the smallest portion of the friction snrece of the heini-sphere, and the spindle dis-lt will engage the largest diameter thereof, so

that the spindle will he 'rotated et e speed much greater than 'thet of the driving shaft Q The drill spiniile may he rotated et any speed necessary :for ordinary Work, and in machines as new constructed, it is found that with a speed of seven hundred and ten revo lutions per minute of the drive shaft, the spindle may be rotated as high es tivo thon sand., six ,hunflred and ifty revolutions per minute, or :is low es one hundred end seventy-our revolutions per minute, or :it :my speed between these two.

.ln order that the drill press may he used to the leest advantage by persons unicniiii with the drill speeds host adapted Aor drilling in dii'ierent metals, the connecting' "er 22 is provided with an indicating table This table, shown in Fig'. 2, (liviflecl into thrce'columns para with the you' oi' notches 4-0, sind et the. bottoni oi cach column are lesignatingimnrlis, Si@ indicate sofi. steel; Cl, to designate cestiron, and li to designate brass. llhesc conirnns :ire liviilecl by cross lines into rows of spaces that :ire in alincmcnt with the various notches 'fl-l und in the spaces thus formed ere numerals dosis' noting drill diameters sc that when :i dri of particular size is used, ssj* e drill o onelmlf inch in diameter, :incl the nnn'icrini soft steel, the operator will move the lever to the msi-li one-heli in the SS column, hut in drilling,r in cest iron, would move the lever to the niark Oneheliin 'the Gl column, and so on, thusevoiding (longer of spoiling the drills end work While at the seine time insuring the: utmost speed of the work.

necessary to turn. the handled screw 27 so es to drew the heini-sphere 31 out of contact with the driving' disk 32, and this, also, drzivvs the 'hemisphere out of contact with the spindle disk 33, so thatI the drill spindle as o Whole is left iree end may he readily turned hy imncl, so to hiring the chuck to a convenient position tor the use of the Wrench .in tightcninq or loosening the drill. ln s' greet nniny flri i chucks, it is necessary to 'turn the chuck to e. certain position dn oroler to release the drill, enel in many drill presses it is necessary tl "urn not only the spinfiie, het sil. ci the irl weil, in Jr-iler to tee chuck around inte'propei' 'position .tor using the rviench, While in the present he spindle is enti v and ii-.fty he turnecl by hand. The screw 2?, moreover, permits adjustment- 'of the ricticnsl contact. between the driving members, sind while this contact need oelcut iight rinsing high spe-ctie, .it is edviseble to increase the pressure during the lower speeds, Where the work. is heuvien o fi ele,im2- n l. in e,` variable friction gear, s 'riving lanni driven tlislt, edjustehie sliding support, s transmission friction member intervmediate of ssirltlislts and connected to snel -nionntefl en esiti support by s rocking joint, and ineens for iijnsting said intermediate `1neniher to very tliepoints of Contact between seid 'niemher and the clisis.

2. s variable friction gear, e driving sind :i driven (lisis, e, hemifs herical inter inefiinte friction member, s siding support ng mechanism es los mcoiuie-z memher nioi'anted, ineens for odjuslinfr seid. sliding support, enel means for adjusting the intermediate member in. the ero n. circle, :incl locking itin seid adjusted position.

ln combination, i iframe havin a. pair ci spin; il seins, rings carried y lssiiii arms, pair l shafts jonrneleil in the bezirings sini iiisposcii et on :ingle to cach other, Friction (lisirs carried by the shafts, en arched her forming :i connection between seid arms :incl provided :it oneeflge with. s series of notches, :Ln adjustable block carried b the trame, e second. hlocl: pivoted to the of justelile block, s. heinisphericel *friction member revoluhly mounted upon seid .second block, and frictionclly engaging both disks, sind a spring adjusting lever connected to the pivoted block cnil arranged to interlock ivith the notches to hold said hlock in' adjusted position.

4. In combination, e frame l aving a pair SAXTUN ff. MURGAN.

' air of shafts jounuled in said bem-ings und c sposed et an angle to each other, en arched I bar connecting said amine and pre'vcled with :L strengthening ribE Said ber having u series of locking notches :1t 011e edge, n block supported by the frame, al, screw foy adjusting j said block., u second block pvoted to the udjusiamble bleek, a hemphercul reton member remluby xfuounied upon the second block and :s'ctoxally engaging both disks, an arm extending from the Seeond block, a handled spring secured i0 said arm and forming an adjusting lever nd a U-Sh'aped Hrm I Witnesws H. .2s/I. WHITCOMB, C. YV. WHITCOMB. 

